China Rising DLC PS3 - Not working or Downloading

I downloaded the code included with the game (includes BF4 China Rising Expansion Pack) , but I can't install it from BF4 store or PS Store.It requests I pay $14.99 although in the BF4 store it is marked FREE until I get to the checkout cart....then the $14.99 pops up?-Of course now it says the code has been used, but I still have no expansion pack?